The decisive victory of the Arabs over the Iranians put an end to Zoroastrian Iran and brought it into the Arab Caliphate in 651. However, the "indirect meeting" of Islam and Zoroastrianism had taken place centuries before through the impact of Zoroaster's teaching on Judaism, Christianity, and the religion of the Muslims. Although the "direct encounter" resulted in the virtual disappearance of Zoroastrianism from Iran, it nonetheless brought about a certain synthesis of the two spiritual traditions--most visible in two classical schools of Islamic thought: the mystical trend of Sufism and the Illuminationism of Ishrāqism. Whether Zoroastrianism is still culturally alive, and what its future prospects may be are discussed here